This is an additional cradle set for the Inno INA450 kayak carrier. It allows you to carry one additional kayak with the base system. It has universal hardware that mounts quickly on all types of car roof racks, including: Inno, Thule, and most factory cross bars. 2 padded cradles and 2 13ft tie down straps protect sea or whitewater kayaks, and can be used with kayaks that weigh up to 70 lbs. Backed by Inno's Lifetime Warranty.